CN221027174U - Adjustable lifting tool for bearing bush of steam turbine - Google Patents

Abstract

The utility model provides an adjustable hoisting tool for a turbine bearing bush, which can be rapidly suitable for hoisting bearing bushes of different sizes. A turbine bushing adjustable lifting tool comprising: the bottom plate is hoisted, and a chute is arranged on the surface of the bottom plate; the fixed bearing base is arranged at one end of the lifting bottom plate opposite to the chute and is provided with a first concave part with an arc surface; the movable bearing base is in sliding connection with the lifting bottom plate through a sliding groove and is provided with a second concave part with an arc surface; one end of the adjusting piece is connected with the end part of the movable bearing base; the clamping piece is arranged above the fixed bearing base and the movable bearing base and is provided with at least two adjusting screws which are in threaded connection with the clamping piece. The utility model can be quickly suitable for hoisting the bearing bushes of the steam turbines with different sizes, and improves the bottom stress uniformity of the bearing bushes when loading the bearing bushes of the steam turbines with different sizes.

Description

Adjustable lifting tool for bearing bush of steam turbine

Technical Field

The utility model relates to a lifting tool, in particular to an adjustable lifting tool for a turbine bearing bush, and belongs to the technical field of turbine installation.

Background

The turbine bearing shell is a key component mounted on the turbine shaft and is usually required to be hoisted when the turbine is mounted. The bearing shells are specially shaped and sized, and many large turbine bearing shells are very heavy and not easy to handle, requiring the use of a lifting tool for accurate positioning during installation. Because the bearing bush is relatively precise and easy to damage, even a slight bump can damage the bearing bush, thereby affecting the performance of the steam turbine, necessary protection measures are needed to be taken during hoisting, and the bearing bush is prevented from being collided or damaged in the hoisting process. Therefore, a special bearing bush lifting tool is generally used for operation, and the bearing bush lifting tool is protected during bearing bush lifting.

The Chinese patent application number 2023205631438 discloses a hoisting structure, when a bush is hoisted, the bush is placed in a groove, then the positions of a connecting rod and a supporting rod are adjusted according to the size of the bush, during adjustment, the connecting rod is pulled, the connecting rod drives the supporting rod to synchronously move until the positions of two opposite supporting rods are adjusted to proper positions, then a screw rod is rotated, the screw rod moves downwards in a sleeve until the bush is clamped and fixed, and therefore the bush can be hoisted safely and effectively.

The hoisting structure can be adjusted to adapt to bearing bushes of different sizes, but the size of the base is fixed, when bearing a bearing bush of a large size, the contact part with the bottom of the bearing bush is concentrated at the position adjacent to the center of the bottom of the bearing bush, so that uneven stress on the bottom of the bearing bush is caused, and the center of the bottom of the bearing bush is easily deformed due to overlarge local stress.

Disclosure of utility model

Based on the background, the utility model aims to provide the adjustable hoisting tool for the turbine bearing bush, which can be rapidly suitable for hoisting the bearing bushes with different sizes, and improves the bottom stress uniformity of the bearing bushes when loading the bearing bushes with the turbine shafts with different sizes.

In order to achieve the above object, the present utility model provides the following technical solutions:

a turbine bushing adjustable lifting tool comprising:

The lifting bottom plate is provided with a chute on the surface, and a first lifting lug piece and a second lifting lug piece are respectively arranged at two ends of the lifting bottom plate in the extending direction of the chute;

The fixed bearing base is arranged at one end, opposite to the chute, of the lifting bottom plate, is fixedly connected with the surface of the lifting bottom plate, and the end part of the fixed bearing base is fixedly connected with the side part of the first lifting lug piece and is provided with a first concave part with an arc surface;

The movable bearing base is arranged opposite to the fixed bearing base and is adjacent to the second lifting lug piece, the movable bearing base is in sliding connection with the lifting bottom plate through a sliding groove, the movable bearing base is provided with a second concave part with an arc surface, and the arc surface of the second concave part is opposite to the arc surface of the first concave part;

The adjusting piece is in threaded connection with the second lifting lug piece, and one end of the adjusting piece is connected with the end part of the movable bearing base;

The clamping piece is arranged above the fixed bearing base and the movable bearing base, the two ends of the clamping piece are respectively fixedly connected with the first lifting lug piece and the second lifting lug piece, the clamping piece is provided with at least two adjusting screws, and the adjusting screws are in threaded connection with the clamping piece.

During hoisting, the adjusting piece is rotated according to the size of the turbine bearing bush, the adjusting piece is moved relative to the second lifting lug piece, the movable bearing base is driven to linearly slide to a proper position relative to the hoisting bottom plate, the turbine bearing bush is placed on the first concave part and the second concave part, then the adjusting screw is rotated, the adjusting screw is moved downwards relative to the clamping piece until the bottom of the adjusting screw is abutted against the surface of the turbine bearing bush and the turbine bearing bush is abutted against the first concave part and the second concave part, and the external hanger is hung on the first lifting lug piece and the second lifting lug piece for hoisting.

Preferably, the longitudinal section of the bottom of the sliding groove is trapezoid, the longitudinal section of the top of the sliding groove is square, the movable bearing base is provided with a sliding block, the sliding block is embedded in the sliding groove, and the longitudinal section of the sliding block is identical to the longitudinal section of the sliding groove.

Preferably, the surface of the first concave part is provided with a first auxiliary supporting member with elasticity, the shape of the first auxiliary supporting member is matched with that of the first concave part, and the width of the first auxiliary supporting member is larger than that of the first concave part.

Preferably, the surface of the second concave part is provided with a second auxiliary supporting member with elasticity, the shape of the second auxiliary supporting member is matched with that of the second concave part, and the width of the second auxiliary supporting member is larger than that of the second concave part.

Preferably, the end of the adjusting piece opposite to the end of the movable bearing base is provided with a first adjusting handle.

Preferably, the end part of the movable bearing base, which is connected with the adjusting piece, is provided with a clamping groove, the end part of the adjusting piece, which is connected with the movable bearing base, is provided with a clamping protrusion, the clamping protrusion is embedded in the clamping groove, and the end part of the adjusting piece can rotate relative to the clamping groove.

Preferably, the end part of the movable bearing base, which is connected with the adjusting piece, is provided with a bearing groove, the end part of the adjusting piece, which is connected with the movable bearing base, is provided with a rolling bearing, the outer wall of the rolling bearing is fixedly connected with the bearing groove, and the inner wall of the rolling bearing is fixedly connected with the end part of the adjusting piece.

Preferably, the clamping piece comprises a fixed rod, at least two sliding blocks and at least two fastening bolts, two ends of the fixed rod are fixedly connected with the first lifting lug piece and the second lifting lug piece respectively, the sliding blocks are sleeved outside the fixed rod and are in sliding connection with the fixed rod, one fastening bolt corresponds to one sliding block, an adjusting screw penetrating through the sliding blocks is arranged on each sliding block, and the adjusting screw is in threaded connection with the sliding blocks.

Preferably, the sliding direction of the sliding block is perpendicular to the moving direction of the adjusting screw.

Preferably, a second adjusting handle is arranged at the top of the adjusting screw, and a pressing plate is arranged at the bottom of the adjusting screw.

Compared with the prior art, the utility model has the following advantages:

According to the adjustable lifting tool for the turbine bearing bush, through the structural arrangement of the fixed bearing base, the movable bearing base, the adjusting piece and the clamping piece relative to the lifting bottom plate, when the first concave part and the second concave part bear the turbine shaft bush, the contact part with the bottom of the turbine bearing bush is reasonably distributed, deformation caused by uneven stress and overlarge local stress on the bottom of the turbine bearing bush is avoided, the adjustable lifting tool for the turbine bearing bush can be rapidly suitable for lifting of turbine bearing bushes with different sizes, and the uniformity of stress on the bottom of the bearing bush when loading turbine shaft bushes with different sizes is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a front view of an adjustable lifting tool for a turbine bearing shell according to the present utility model;

FIG. 2 is a schematic view of a longitudinal section structure of a chute and a slider in the present utility model;

FIG. 3 is a schematic view of a partial perspective view of an adjustable lifting tool for a turbine bearing shell according to the present utility model;

FIG. 4 is a schematic view of a first embodiment of the utility model in which the mobile load-bearing base is coupled to the adjustment member;

FIG. 5 is a schematic view of a second embodiment of the utility model in which the mobile load-bearing base is coupled to the adjustment member;

fig. 6 is a schematic top view of the clamping member according to the present utility model.

In the figure: 1. hoisting the bottom plate; 2. a fixed bearing base; 3. moving the bearing base; 4. an adjusting member; 5. a clamping member; 101. a chute; 102. a first shackle member; 103. a second shackle member; 201. a first concave portion; 202. a first auxiliary support; 301. a second concave portion; 302. a second auxiliary support; 303. a clamping groove; 304. a bearing groove; 305. a slide block; 401. a first adjustment handle; 402. the clamping bulge; 403. a rolling bearing; 501. adjusting a screw; 502. a fixed rod; 503. a sliding block; 504. a fastening bolt; 5011. a second adjustment handle; 5012. and (5) pressing plates.

Detailed Description

The technical scheme of the utility model is further specifically described below through specific embodiments and with reference to the accompanying drawings. It should be understood that the practice of the utility model is not limited to the following examples, but is intended to be within the scope of the utility model in any form and/or modification thereof.

In the present utility model, unless otherwise specified, all parts and percentages are by weight, and the equipment, materials, etc. used are commercially available or are conventional in the art. The methods in the following examples are conventional in the art unless otherwise specified. The components and devices in the following examples are, unless otherwise indicated, all those components and devices known to those skilled in the art, and their structures and principles are known to those skilled in the art from technical manuals or by routine experimentation.

In the following detailed description of embodiments of the utility model, reference is made to the accompanying drawings, in which, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. However, one or more embodiments may be practiced by one of ordinary skill in the art without these specific details.

The embodiment of the utility model discloses an adjustable lifting tool for a steam turbine bearing bush, which comprises a lifting bottom plate 1, a fixed bearing base 2, a movable bearing base 3, an adjusting piece 4 and a clamping piece 5. The surface of the lifting bottom plate 1 is provided with a sliding groove 101, and two ends of the lifting bottom plate 1 in the extending direction of the sliding groove 101 are respectively provided with a first lifting lug piece 102 and a second lifting lug piece 103. The fixed bearing base 2 is arranged at one end of the lifting bottom plate 1 opposite to the sliding groove 101, the fixed bearing base 2 is fixedly connected with the surface of the lifting bottom plate 1, the end part of the fixed bearing base 2 is fixedly connected with the side part of the first lifting lug piece 102, and the fixed bearing base 2 is provided with a first concave part 201 with an arc surface. The movable bearing base 3 is arranged opposite to the fixed bearing base 2 and is adjacent to the second lifting lug piece 103, the movable bearing base 3 is in sliding connection with the lifting bottom plate 1 through the sliding groove 101, the movable bearing base 3 is provided with a second concave portion 301 with an arc surface, and the arc surface of the second concave portion 301 is opposite to the arc surface of the first concave portion 201. The adjusting member 4 is in threaded connection with the second lifting lug member 103, and one end of the adjusting member 4 is connected with the end of the movable bearing base 3. The clamping piece 5 is arranged above the fixed bearing base 2 and the movable bearing base 3, two ends of the clamping piece 5 are respectively fixedly connected with the first lifting lug piece 102 and the second lifting lug piece 103, the clamping piece 5 is provided with two adjusting screws 501, and the adjusting screws 501 are in threaded connection with the clamping piece 5.

Specifically, as shown in fig. 2, the bottom longitudinal section of the chute 101 is trapezoidal, the top longitudinal section of the chute 101 is square, the mobile bearing base 3 is provided with a slide block 305, the slide block 305 is embedded in the chute 101, and the longitudinal section shape of the slide block 305 is the same as that of the chute 101. The sliding groove 101 and the sliding block 305 have mutually matched longitudinal section shapes, so that the sliding block 305 is stably embedded in the sliding groove 101 and can smoothly slide along the sliding groove 101.

Specifically, as shown in fig. 3, the surface of the first concave portion 201 is provided with a first auxiliary supporting member 202 having elasticity, the shape of the first auxiliary supporting member 202 is matched with the shape of the first concave portion 201, and the width of the first auxiliary supporting member 202 is greater than the width of the first concave portion 201. The surface of the second concave portion 301 is provided with a second auxiliary supporting member 302 with elasticity, the shape of the second auxiliary supporting member 302 is matched with that of the second concave portion 301, and the width of the second auxiliary supporting member 302 is larger than that of the second concave portion 301. The first and second auxiliary supports 202, 302 having elasticity are capable of performing necessary elastic deformation, thereby buffering and protecting the bearing bush bearing of the steam turbine.

Specifically, the end of the adjusting member 4 opposite to the end of the movable carrying base 3 is provided with a first adjusting lever 401, thereby facilitating the operator to rotate the adjusting member 4.

Specifically, as shown in fig. 4, a clamping groove 303 is formed at the end portion of the movable bearing base 3 connected with the adjusting member 4, a clamping protrusion 402 is formed at the end portion of the adjusting member 4 connected with the movable bearing base 3, the clamping protrusion 402 is embedded in the clamping groove 303, and the end portion of the adjusting member 4 can rotate relative to the clamping groove 303.

In another embodiment, the connection between the movable bearing base 3 and the adjusting member 4 is implemented by another structure, specifically, as shown in fig. 5, the end portion of the movable bearing base 3 connected to the adjusting member 4 is provided with a bearing groove 304, the end portion of the adjusting member 4 connected to the movable bearing base 3 is provided with a rolling bearing 403, the outer wall of the rolling bearing 403 is fixedly connected to the bearing groove 304, and the inner wall of the rolling bearing 403 is fixedly connected to the end portion of the adjusting member 4.

Specifically, as shown in fig. 6, the clamping member 5 includes a fixing rod 502, two sliding blocks 503 and two fastening bolts 504, two ends of the fixing rod 502 are fixedly connected with the first lifting lug member 102 and the second lifting lug member 103 respectively, the sliding blocks 503 are sleeved outside the fixing rod 502 and are slidably connected with the fixing rod 502, one fastening bolt 504 is arranged corresponding to one sliding block 503, an adjusting screw 501 penetrating through the sliding block 503 is arranged on each sliding block 503, and the adjusting screw 501 is in threaded connection with the sliding block 503. The sliding direction of the sliding block 503 and the moving direction of the adjusting screw 501 are perpendicular to each other.

Specifically, a second adjusting handle 5011 is provided on the top of the adjusting screw 501, thereby facilitating the operator to rotate the adjusting screw 501. The bottom of the adjusting screw 501 is provided with a pressing plate 5012, so that the contact area between the bottom of the adjusting screw 501 and the turbine bearing bush is increased, and the turbine bearing bush is firmly clamped.

During hoisting, the adjusting piece 4 is rotated according to the size of the turbine bearing bush, so that the adjusting piece moves relative to the second lifting lug piece 103, the movable bearing base 3 is driven to linearly slide to a proper position relative to the hoisting bottom plate 1, the turbine bearing bush is placed on the first concave part 201 and the second concave part 301, then the adjusting screw 501 is rotated, the adjusting screw 501 is moved downwards relative to the clamping piece 5 until the bottom of the adjusting screw 501 abuts against the surface of the turbine bearing bush and abuts against the first concave part 201 and the second concave part 301, and the external hanger is hung on the first lifting lug piece 102 and the second lifting lug piece 103 for hoisting.

This lifting device with adjustable turbine axle bush is through fixed bearing base 2, removal bearing base 3, regulating part 4 and clamping part 5 for the structure setting of hoist and mount bottom plate 1, when making first depressed part 201 and second depressed part 301 bear turbine axle bush, with the contact position rational distribution of turbine axle bush bottom, avoid the uneven and too big deformation of local atress of turbine axle bush bottom atress. The adjustable lifting tool for the turbine bearing bush can be quickly suitable for lifting turbine bearing bushes of different sizes, and improves the bearing bush bottom stress uniformity when loading turbine bearing bushes of different sizes.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The utility model provides a lifting device with adjustable steam turbine axle bush which characterized in that: this lifting device with adjustable steam turbine axle bush includes:

the lifting device comprises a lifting bottom plate (1), wherein a sliding groove (101) is formed in the surface of the lifting bottom plate (1), and a first lifting lug piece (102) and a second lifting lug piece (103) are respectively arranged at two ends of the lifting bottom plate (1) in the extending direction of the sliding groove (101);

The fixed bearing base (2) is arranged at one end, opposite to the chute (101), of the lifting bottom plate (1), the fixed bearing base (2) is fixedly connected with the surface of the lifting bottom plate (1), the end part of the fixed bearing base (2) is fixedly connected with the side part of the first lifting lug piece (102), and the fixed bearing base (2) is provided with a first concave part (201) with an arc surface;

The movable bearing base (3) is arranged opposite to the fixed bearing base (2) and is adjacent to the second lifting lug piece (103), the movable bearing base (3) is in sliding connection with the lifting bottom plate (1) through a sliding groove (101), the movable bearing base (3) is provided with a second concave part (301) with an arc surface, and the arc surface of the second concave part (301) is opposite to the arc surface of the first concave part (201);

The adjusting piece (4) is in threaded connection with the second lifting lug piece (103), and one end of the adjusting piece (4) is connected with the end part of the movable bearing base (3);

Clamping piece (5), locate fixed bearing base (2) and remove bearing base (3) top, first lug spare (102) and second lug spare (103) of clamping piece (5) both ends fixed connection respectively, clamping piece (5) are equipped with two at least adjusting screw (501), adjusting screw (501) and clamping piece (5) threaded connection.

2. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the bottom longitudinal section of the sliding groove (101) is trapezoid, the top longitudinal section of the sliding groove (101) is square, the movable bearing base (3) is provided with a sliding block (305), the sliding block (305) is embedded in the sliding groove (101), and the longitudinal section of the sliding block (305) is identical to the longitudinal section of the sliding groove (101).

3. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the surface of the first concave part (201) is provided with a first elastic auxiliary supporting piece (202), the shape of the first auxiliary supporting piece (202) is matched with that of the first concave part (201), and the width of the first auxiliary supporting piece (202) is larger than that of the first concave part (201).

4. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the surface of the second concave part (301) is provided with a second auxiliary supporting piece (302) with elasticity, the shape of the second auxiliary supporting piece (302) is matched with that of the second concave part (301), and the width of the second auxiliary supporting piece (302) is larger than that of the second concave part (301).

5. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the end of the adjusting piece (4) opposite to the end of the movable bearing base (3) is provided with a first adjusting handle (401).

6. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the end that removes and bear base (3) and adjusting part (4) are connected is equipped with draw-in groove (303), and the end that adjusting part (4) and remove and bear base (3) are connected is equipped with joint arch (402), joint arch (402) inlay in draw-in groove (303), and the end of adjusting part (4) can rotate for draw-in groove (303).

7. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the end that removes and bear base (3) and regulating part (4) are connected is equipped with bearing groove (304), and the end that regulating part (4) and remove and bear base (3) are connected is equipped with antifriction bearing (403), antifriction bearing (403) outer wall and bearing groove (304) fixed connection, antifriction bearing (403) inner wall and regulating part (4) end fixed connection.

8. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: clamping part (5) are including dead lever (502), two at least sliding blocks (503) and two at least fastening bolt (504), the both ends of dead lever (502) respectively with first lug piece (102) and second lug piece (103) fixed connection, outside and with dead lever (502) sliding connection of sliding block (503) cover locate dead lever (502), one fastening bolt (504) set up corresponding to one sliding block (503), set up on every sliding block (503) one and run through adjusting screw (501) of sliding block (503), adjusting screw (501) and sliding block (503) threaded connection.

9. The adjustable lifting tool for a turbine bearing bush of claim 8, wherein: the sliding direction of the sliding block (503) is perpendicular to the moving direction of the adjusting screw (501).

10. The adjustable lifting tool for a turbine bearing bush of claim 1, wherein: the top of the adjusting screw (501) is provided with a second adjusting handle (5011), and the bottom of the adjusting screw (501) is provided with a pressing plate (5012).